Loose-leaf binder.



y `C. SAYERS.

LOOSE LEAF BINDER.

APPucATloN FILED SEPT. 15. 1914.

1,153,713.l Patentedsept. 111, 1915. Fa. 1 1713.2 yE34 Fg. 5

@62672555557 l W m 715W??? C yfiZ Seg/ens,

'UNTTTED %TATF% PATENT FFTCE. i

CYRIL SAYERS, 0F JERSEY CITY; NEW JERSEY.

speeification of retters'ratent. Paterna@ Sept, 14, 1g 15.

Application filed September 15, 1914. Serial No. 861,756.

To all whom t may concern Be it lrnownthat I, CYRIL SAYnas, a subject of the King of Great Britain, and a resident of Jersey City; in the county of Hudson Vand State of New Jersey, have invented a new and Improved Loose-Leaf Binder, of which the following is a specilication.

My invention relates to binders-especially to that class of devices which are used to temporarilyv bind together a number of loose leaves; between suitable covers.

Its object is to provide an improved clamping device which will readily permit the covers to be separated sufficiently to allow leaves to be inserted or taken out without; at the same time, entirely disconnecting Y the covers.

A practical embodiment of my invention is shown in the accompanying drawings, to which reference is made in the following detailed description.

Figure l is a plan' of the base or bottom portion of my device; Fig..2 is a plan of a binder post; Fig. 3 is a plan of the clamping screw; Fig. 4 is a plan of the extensible, locking screw; Fig. 5is a plan of the removable ller block; Figs. 1a-5a are corresponding side elevations of the parts shown in Figs. 1 5; Fig. 6 isan elevation, in section, on an enlarged scale, showing the position of all the parts when in use, and Fig. 7 is a similar view with the filler block removed and the upper cover raised.

rFhe bottom or ,base comprises a. nut l which is preferably recessed in the lower cover 2. lnto this nut is screwed the male portion 3a of the binder post 3. One or more of these posts being used, according to the number or thickness of the sheets l to be clamped or bound together-this being a common binder post extension construction. A clamping screw 5 is inserted in the internally threaded portion 3b of the binder post. This clamp screw has a bottom chamber 5a and the head of saidscrew is internally threaded at 5b, the two chambers being connected by a small hole which is shown inFigs. 6 and 7 iilled by the stem 6. The head of the clamp screw has two opposite tangential side grooves 5 which are cut deep enough to open upl the bottom of the threaded chamber 5b.

A locking screw 6, having a knurled, cupped head 6a, a conical portion 6b, a stern 6c7 the lower end of which is enlarged into a head 6d, is contained in the chambers of the clamp screw. It may be screwed into the position shown in F 6 or nnscrewed and drawn upward as shown in Fig. 7 the head on the stem preventing it from being entirely withdrawn.

The upper cover 7 has secured to it or has recessed in it a plain washer S which lines up with a corresponding hole in the cover and fits loosely'over the binder post.

A ller block 9, which is preferably cup shaped has a countersunlr portion or conical depression 9a and has a slot 9b extending in from one edge and the rimof thecup is cut away as shown at 9. It will readily be seen' that this filler block will slip into the grooves of the head of the clamp screw 5 and that by inserting the lock screw 6 the conical portion 6b will enter the conical depression of the filler block and hold it in place and that this has the same eect as lengthening the head of the screw 5.

From the foregoing construction it is evident that, by loosening the locking screw and removing the filler block, the upper cover may be raised as shown in Fig. 7, giving ample room for the insertion or the taking out of the sheets 4, but that the cover is held by the stem of the locking screw 6 and falls readily back to place. The filler block is then inserted and screwed down, or the locking screw may be put in first and its lrnurled surface used in screwing down the clamp screw.

What I claim is:

1. A binder post clamp screw having a body portion and ahead portion, in combination with a removable filler block and means for securing said filler block to said screw.

2. A binder post clamp screw having a held and a threaded body portion-said head being internally threaded, in combination with a removable liller block and a locking screwsaid locking screw being adapted to enter the internally threaded portion of said clamp screw to hold said iiller block and said clamp screw together.

3. A binder post clamp screw having a head and a threaded body portion-said body portion having an internal chamber. and said head being internally threaded7 a locking screw mounted in said clamp screwsaid locking screw having a short threaded portion and a long stem portion with retaining means at its lower end; in combination with a removable ller block which is adapted to be clamped and retained in position between said screws.

4. A clamp screw having a threaded body portion and a head-said head being internally threaded and having a pair of`opposite tangential slots or grooves, in combination with a iller block which is adapted to enter said slots, and a locking screw which is adapted to enter said clamp screw to lock said filler block and said clamp screw together. l

5. In a loose leaf binder having two covers and a binder post extending between said covers, a binder post clamp screw having a head and a threaded body portion, in combination with a removable filler block which is adapted to be inserted between the head of said clamp screw and one of said covers, means for locking said ller block in place, said locking means having a limited withdrawal vmovement-whereby one of said covers may be withdrawn a limited distance to permit the taking out or insertion ofleaves without being entirely disconnected.

6. A binder post clamp screw having al head and a threaded body portion, in combisaid filler block-said locking screw havinga cone shaped portion which is adapted to enter the conicaldepression inV said filler block, substantially as shown and described. Y ln testimony whereof I affix my signature in presence of two witnesses. Y

CYRIL savane.

Witnesses: A

T. V. MAGKINNON, i Y MICHAEL J. KING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washiugton,D.G.

nation with a removable iller block and a Y 

